Fountain pen



D. B. KAUFMANN.

FOUNTAIN PEN. f l Y APPLICATION FILED OCT. 24,1921- y 1,428,333. Patented Sept. 5, 1922.

7: '/4\ /79 Ag I' v///// /xf/ A f N s f /6 /5 Arme/vf? Patented Sept. 5, 1922.,

lihtll DAVID B. KAUFi/LANN,

OE' GINClNNATI, ORIG.

FOUNTAN EN.

vApplication filed October 24,1921. l Serial No. 510,039.

, to the self-filler ink-sack that is subject to 'collapsing action or compression by means of a parallel contacting presser-bar that is actuated from the outside of the pen-barrel -by a compression-lever fulcrumed on a detent-ring transversely set within the said barrel adjacent a longitudinal slot, and the object of my invention is to provide aspecial form of detent-ring for said compression-lever, such special form of ring 'comprising or contemplating a split, partiallyoverlapping one that is of less than two coils, somewhat similar to the ordinary form of key-ring but with the opposite ends of the second coil curtailed and at a suitable distance apart so as to permit the pivotalmounting of the contracted eye of the said compression-lever on a single thickness of coil and with said opposite ends of the uncompleted and but partly wound second coil a greater or less distance from the said contracted eye of the compression-lever, whereby the ring, when once strung on the lever eye, that is of lesser diameter than two coils, cannot become accidentally displaced from the lever, nor the latter from the ring when the device is set in operative-place in the slotted part of the pen-barrel for use in making said ink iills and refills, nor can the said split-ring become displaced or disengaged from the lever when apart from its place in the slotted portion of the barrel and not in using position.

The exact details of arrangement and structure will be fully described in connection with the accompanying sheet of drawings, in whichf Figure 1 is a fragmentary longitudinal section of the handle-end of a fountain-pen showing my invention in normal position therein; Fig. 2, a similar view, but with the self-filling means in actuating position; Fig. 3, a detail plan view showing the compression-lever and its preferred form of detentg, the latter in strung position thereon; and Fig. il, an edge view, similar to that of Fig. 2, of the detent-ring, but with the compression-lever omitted. f

5 indicates the barrel; 6, the elastic inksack within the barrel 7 the longitudinal presser-bar mounted and held within the barrel under the spring-expansion of its parrin o' vtially-looped rear end' 8; 9, an elongated 65 slot made in the barrel about midway between-its ends, coincident with the said inksack but midlcngth thereof and having a llinger-depression 10 at its rear'end; and 11,

the rear-end-closure of the barrel', all thus 70 far as in general use, but especially adapted to my improvement herein. i

12 indicates the'compression-lever having a pivotal eye-portion 13, a short, sack-contacting fore end 14E and a long-actuating, 75 rear, finger-end 15, the latter extending into the depression or recess 10 at the rear end of the slot 9 when the leveris in place in the slot for use in collapsing the ink-sack forL sucking up the ink in filling and relling operations, as customary in the commonlystyled self-filler fountain-pens.

rlhe lever 12 is pivotally-mounted on a ring 16 set transversely or crosswise in a circumferential groove 17 within the pen- 85 barrel to prevent its ordinary displacement and at a suitable distance from the fore end of the slot 9 so as to allow for the normal position of the fore, short depressing-end 11- of the lever 12 that terminates in ap- 90 proximate alinement therewith. l

The said ring 16 is intended to hold the lever in place in the slotted portion of the barrel, but quite free to be swung or pivoted thereon. It is the peculiar structure of this ring 16 that embodies or concerns the essential feature of my invention herein, and it is simply in the nature of a splitring, of the ordinary key-ring type, but with the opposite ends 18 and 19 of the usual sec- 100 ond coil somewhat curtailed so as to provide but a single thickness of coil or wire for the contracted eye of the pivotal-part 13 of the lever 12 to be strung thereon in the slotted portion of the barrel. In other words, to be extremely explicit at this point n this i description, the special form of ring 16 herein is an overlapping partly wound Spiral that is less than a double coil but more than a single coil, with its opposite ends 18 and 19 a suitable distance apart to provide between them a single thickness of'coil for the desired free pivotal-inounting of the comQression-lever thereon7 1preventing any escape of the lever from the ring, or the ring from the lever, and at the saine time making due allowance for any required contraction of the ring in the compressing-ad tion oi the lever on the ink-sack 7.

lt Will be fully understood that the contracted eye of the lever 12 is orn lesser diaineter than that of the combined diameters of tivo coils and just sufficient for the desired running of the single coil therethrouvh so that the opposite lapped ends 18 and 19 shall serve as stops or obstructions on the ring 'when the lever is in glace on the single part or thickness of the eoil between the said opposing ends 18 and 19.

1t is not deemed necessary to describe the manner of assembling` the parts herein, as it is easil,7 accomplished through the bore and slot of the barrel.

l claiin1- 1. ln a self-iilling fountain-pen, a barrel having an elongated slot therein, an inlrsack Within the barrel, a compression-bar mounted Within the barrel and adapted to Contact with the said ink-sack, a compression-lever having a pivoting eye-portion and arranged lengthwise in said slot, and a split ring set transversely in the barrel adj aeent the said slot, such split-ring being of but a single coil With its opposite ends extending and overlapping into another partial coil but With an interveningr single thickness of the main coil for the snug mounting and pivotal engagement of said eye-portion of said lever that is free to turn or hinge thereon in the slot and thence into the barrel but prevented troni its dislodginent on. the ring, or the ring from it, substantially as shown and described.

2. ln a self-filling fountain-pen, a cornpression-lever and a hinging detent-ring for said compression-lever, the said detentering being composed of a single spiral or eoil having extended overlapping opposite ends that are duly spacedl from each other so that the spiral is less than a double coil but more than a single coil, substantially as herein, shown and described.

DAVID B. KAUFMAN-N. 

